:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #102a21;
  background: #f6f3e9;
}

* { box-sizing: border-box; }
body { margin: 0; line-height: 1.6; }
main { width: min(760px, calc(100% - 32px)); margin: 0 auto; padding: 40px 0 64px; }
header { border-bottom: 1px solid #d9c89c; margin-bottom: 24px; padding-bottom: 20px; }
h1 { font-size: clamp(1.75rem, 5vw, 2.5rem); line-height: 1.15; margin: 0 0 8px; }
h2 { font-size: 1.05rem; margin: 0 0 8px; }
p, li { color: #3c514a; font-size: 1rem; }
section { background: #fffef8; border: 1px solid #d9c89c; border-radius: 8px; margin: 12px 0; padding: 18px; }
a { color: #07523d; font-weight: 700; }
.meta { color: #66766f; font-size: .9rem; }
.notice { background: #f1f7f4; border-color: #b8cec4; }
nav { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 16px; }
footer { color: #66766f; font-size: .85rem; margin-top: 26px; }